Switching Power Supply Repair; How does such a power supply work?

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Published on Premiered May 26, 2021

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In this video, we repair a plug-in switching power supply. We check what's wrong, look for damaged components, and replace them. In the meantime, I'm telling you about how such a power supply works. Then we turn on the power supply and check its current efficiency. -----------------------Table of contents---------------------- 0:00 Introduction, inspection of the patient 0:56 What's the problem? 1:39 Inside the power supply 4:10 How does such a power supply work? 10:26 Checking the electrolytes and replacing them 12:25 The toothpick method 13:14 Checking capacitors continued 14:29 Will the power supply work? 15:49 Current efficiency measurements 18:03 What to do to keep the electrolytes from failing too quickly? 19:09 Conclusion ---------------------------------------------------------------- Don't want to miss new videos? Subscribe to the channel! My most interesting videos: Simple FM radio: • How to make a simple FM radio? Receiver... Portable regulated power supply: • Reliable regulated power supply with fu... FM transmitter: • Long-range FM transmitter, design... Changing voltage from 24V to 12V in a power supply: • How to change the output voltage in a pow... Simple flyback power supply: • How to build a simple power supply in a topol... Repairing a power supply in which a mosfet blew up: • Repairing a switching power supply in which a... We repair a switching power supply: • Repairing a switching power supply; What's up... Dummy load for testing power supplies: • Dummy load for testing power supplies... Changing the voltage in a switching power supply: • Changing the output voltage in a power supply... Reverse polarity protection: • Protecting systems against reverse polarity... MPPT controller for solar panels: • Solar charger, charge controller... Repairing an energy-saving light bulb: • How to repair an energy-saving light bulb,... We build a switching power supply: • How to build a power supply in the fly topology... Laboratory power supply: • Converting a switching power supply to a la... Repairing a 5V charger: • Repairing a charger, 5V power supply; LCD monitor repair: • How to repair an LCD monitor, what is in it... ATX power supply repair: • How to repair an ATX power supply, what to look for... Battery rectifier: • Automatic rectifier, charger for... Short circuit protection: • Current limiter, overload protection... Step-up/down converter: • Simple and universal control converter... Simple regulated power supply: • Switching power supply conversion to re... 100W converter from 12V to 230 or 325V: • Converter from 12V to 230 or 325V, m... LED oscilloscope: • LED oscilloscope (part 1): introduction... Simple and efficient audio amplifier: • Simple but efficient audio amplifier... Induction heater, high voltages on ZVS: • ZVS circuit, i.e. induction heater... PWM controller for motors and bulbs: • Regulator PWM for Motors and Light Bulbs ... Playlists: Electronics Basics: • Electronics Basics DIY: • DIY Converters: • Converters Repairs: • Repairs

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